R: Difference of thread radius (for taper threads only) angle or any other angle using G92 but G92 can be simple too if just doing a simple straight in thread. For metrical threads, Mach3 comes with the G76thread.exe. To actually cut a thread with Mach3 and the G76 macro, you need a couple of parameters, the numer of passes etc. Hello, I just have released a beta version of my Mach3 Threading Helper. (Face off the stock) (Turn the stock OD to the major diameter) (Set Z 0 so the threading tool tip is at the face) G0 X 0.3449 Z 0.2000 G76 P 0.0500 Z-0.5000 I-0.1000 J 0.0080 K 0.0627 Q 29.
#G76 threading with cutviewer turn software#
We have software that generates the 60 Deg. Free G76 Macro Helping program for Mach3 Turn. X: Minor diameter of the thread in case of external thread – Major diameter in case of internal. Only thing I use G76 for is multable thread leads, G92 for everything else, it allows much better control of depth. Number of cutting passes can be controlled by varying this value. This machine runs Fanuc OT and a g76 cycle for thread cutting. I have got the uploaded post to where I want it apart from threading. Q: Minimum depth of cut, subsequent passes depth (Δd√n – Δd√n-1). Hi there, I have been a recent convert to Fusion and now the Mills are running quite well it is time to get our lathe post processors sorted. P cc: Angle of tool tip / angle of thread. “CNC Lathe | G76 Cycle | Multiple Repetitive Threading” You will be able to write CNC Program after read this post but if you want more information or all details, please have a look: In this cycle the thread cutting tool continues automatically by repeating the cycle until it reaches the depth of P (thread height) by removing the sawdust in the cycle. Required depth is reached automatically by generating several passes. Multipass thread cycle (ISO G76) allows you to use a single frame of the NC-program to set all parameters necessary for machine to make a standard form thread. N50- Threading cycle command, Minor dia X axis, threading along Z- axis up to -50, Threading depth, Depth of finish cut 0.1 mm, pitch is 2. The toolpath of threading operations can be generated using various output formats. N30- Rapid action command where X45 and Z5. In CNC lathes ( Turning machine ), G76 cycle is used for threading. G76 FANUC THREADING CYCLE CNC PROGRAM WITH DESCRIPTION (Metric thread) N70 M05 M09 M30 More examples.